The Centre de Donnes astronomiques de Strasbourg (CDS) maintains
SIMBAD, an extensive database of information on astronomical objects
outside the solar system. This service is a wrapper around SIMBAD
which allows the user to obtain a table of SIMBAD sources for the
region covered by an image displayed in OASIS. This table can itself
be used as an OASIS overlay and contains links back to SIMBAD for
detailed information on each source.
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